Joachim Lutz

Single source optical OFDM transmitter and optical FFT receiver demonstrated at line rates of 5.4 and 10.8 Tbit/s

OFDM data with line rates of 5.4 Tbit/s or 10.8 Tbit/s are generated and decoded with a new real-time all-optical FFT receiver. Each of 75 carriers of a comb source is encoded with 18 GBd QPSK or 16-QAM.

Integrated 100 Gbit/s ETDM Receiver in a Transmission Experiment over 480 km DMF

We report an integrated ETDM receiver for 100 Gbit/s, which comprises 1:2-demultiplexing and clock & data recovery on a single chip. The ETDM receiver was tested successfully in a 100 Gbit/s transmission experiment over 480 km dispersion managed fiber.

Generation of 224-Gb/s multicarrier offset-QAM using a real-time transmitter

We present the first real-time transmitter generating a multicarrier offset-QAM signal at 224 Gb/s after polarization multiplexing. Low penalties are achieved in a back-to-back experiment using a novel FPGA platform including two high-speed DACs running at 32 GS/s.

Integrated 100-Gb/s ETDM Receiver

Ethernet in backbone networks has the potential to provide high-performance and cost-efficient networking solutions. Driven by the rapid growth of Ethernet traffic, it is likely that, in the transport network, the next step in terms of the data rate will be 100 Gb/s. In this paper, we report on an integrated electrical-time-division-multiplexing (ETDM) receiver for 100/107 Gb/s, which comprises 1 : 2 demultiplexing and clock-and-data recovery on a single chip. The ETDM receiver was tested successfully in 100- and 107-Gb/s transmission experiments over 480-km dispersion-managed fiber

Generation of 64 GBd 4ASK signals using a silicon-organic hybrid modulator at 80°C.

We demonstrate a silicon-organic hybrid (SOH) Mach-Zehnder modulator (MZM) generating four-level amplitude shift keying (4ASK) signals at symbol rates of up to 64 GBd both at room temperature and at an elevated temperature of 80°C. The measured line rate of 128 Gbit/s corresponds to the highest value demonstrated for silicon-based MZM so far. We report bit error ratios of 10-10 (64 GBd BPSK), 10-5 (36 GBd 4ASK), and 4 × 10-3 (64 GBd 4ASK) at room temperature. At 80 °C, the respective bit error ratios are 10-10, 10-4, and 1.3 × 10-2. The high-temperature experiments were performed in regular oxygen-rich ambient atmosphere.

Challenges for 100 Gbit/s ETDM Transmission and Implementation

This paper reviews the current status in ultra-high speed electronics and optoelectronic components and reports on the recent progress in serial ETDM transmission technologies at channel- bitrates of 85...107 Gbit/s. The challenges associated with 100 Gbit/s ETDM transmission and subsystems implementation are addressed.

Serial 107Gbit/s ETDM NRZ Transmission over 320km SSMF

We report on a complete serial 107 Gbit/s ETDM NRZ transmission system and assess system performance in an error free transmission experiment over 320 km SSMF with 3.5 dB OSNR margin.

All-optical FFT signal processing of a 10.8 Tb/s single channel OFDM signal

OFDM data with line rates at 10.8 Tbit/s is generated and decoded with a real-time alloptical FFT receiver.

100 GBd Intensity Modulation and Direct Detection With an InP-Based Monolithic DFB Laser Mach–Zehnder Modulator

We demonstrate, for the first time with a DFB-MZM at 1550 nm, 100-GBd NRZ and PAM4 transmission over up to 1.2 km due to close-to-zero chirp. At 100-GBd PAM4, the DFB-MZM consumed only 0.85 pJ/bit.